The Captains were concerned not only about food for the Corps, but also for their horses.
Capt. Clark, June 19, 1806--in my walk of this day up the creek I observed a great abundance of fine grass sufficient to sustain our horses any length of time we chose to stay at this place. Several glades of quawmash. the S W. Sides of the hills is fallen timber and burnt woods, the N. E. Sides of the hills- is thickly timbered with lofty pine, and thick under growth